The first link is top a guide/holder that bolts up to the LS engine. Where would you bolt it to a Gen 1 SBC? Hopefully SSedan64 will come along any enlighten us on it and the second one, which is for the Gen 1.
My take on it is these are to help facillate cam changes by holding the lifters up away from the cam lobes, not to replace the dog bones.
Gen 1 SBC w/guides and dogbones